docker stack services
| 内容説明 | List the services in the stack |
|---|---|
| 利用方法 | docker stack services [OPTIONS] STACK |
Swarm このコマンドは Swarm オーケストレーターにおいて動作します。
内容説明
Lists the services that are running as part of the specified stack.
メモ
これはクラスター管理コマンドであるため、Swarm のマネージャーノード上で実行する必要があります。 マネージャーノードとワーカーノードについては、本ドキュメントの Swarm モード を参照してください。
オプション
| オプション | デフォルト | 内容説明 |
|---|---|---|
-f, --filter | Filter output based on conditions provided | |
--format | Format output using a custom template: 'table': Print output in table format with column headers (default) 'table TEMPLATE': Print output in table format using the given Go template 'json': Print in JSON format 'TEMPLATE': Print output using the given Go template. Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates | |
-q, --quiet | Only display IDs |
利用例
The following command shows all services in the myapp stack:
$ docker stack services myapp
ID NAME REPLICAS IMAGE COMMAND
7be5ei6sqeye myapp_web 1/1 nginx@sha256:23f809e7fd5952e7d5be065b4d3643fbbceccd349d537b62a123ef2201bc886f
dn7m7nhhfb9y myapp_db 1/1 mysql@sha256:a9a5b559f8821fe73d58c3606c812d1c044868d42c63817fa5125fd9d8b7b539
Filtering (--filter)
The filtering flag (-f or --filter) format is a key=value pair. If there
is more than one filter, then pass multiple flags (e.g. --filter "foo=bar" --filter "bif=baz").
Multiple filter flags are combined as an OR filter.
The following command shows both the web and db services:
$ docker stack services --filter name=myapp_web --filter name=myapp_db myapp
ID NAME REPLICAS IMAGE COMMAND
7be5ei6sqeye myapp_web 1/1 nginx@sha256:23f809e7fd5952e7d5be065b4d3643fbbceccd349d537b62a123ef2201bc886f
dn7m7nhhfb9y myapp_db 1/1 mysql@sha256:a9a5b559f8821fe73d58c3606c812d1c044868d42c63817fa5125fd9d8b7b539
The currently supported filters are:
- id / ID (
--filter id=7be5ei6sqeye, or--filter ID=7be5ei6sqeye) - label (
--filter label=key=value) - mode (
--filter mode=replicated, or--filter mode=global)- Swarm: not supported
- name (
--filter name=myapp_web) - node (
--filter node=mynode)- Swarm: not supported
- service (
--filter service=web)- Swarm: not supported
Format the output (--format)
The formatting options (--format) pretty-prints services output
using a Go template.
Valid placeholders for the Go template are listed below:
| Placeholder | Description |
|---|---|
.ID | Service ID |
.Name | Service name |
.Mode | Service mode (replicated, global) |
.Replicas | Service replicas |
.Image | Service image |
When using the --format option, the stack services command will either
output the data exactly as the template declares or, when using the
table directive, includes column headers as well.
The following example uses a template without headers and outputs the
ID, Mode, and Replicas entries separated by a colon (:) for all services:
$ docker stack services --format "{{.ID}}: {{.Mode}} {{.Replicas}}"
0zmvwuiu3vue: replicated 10/10
fm6uf97exkul: global 5/5
To list all services in JSON format, use the json directive:
$ docker stack services ls --format json
{"ID":"0axqbl293vwm","Image":"localstack/localstack:latest","Mode":"replicated","Name":"myapp_localstack","Ports":"*:4566-\u003e4566/tcp, *:8080-\u003e8080/tcp","Replicas":"0/1"}
{"ID":"384xvtzigz3p","Image":"redis:6.0.9-alpine3.12","Mode":"replicated","Name":"myapp_redis","Ports":"*:6379-\u003e6379/tcp","Replicas":"1/1"}
{"ID":"hyujct8cnjkk","Image":"postgres:13.2-alpine","Mode":"replicated","Name":"myapp_repos-db","Ports":"*:5432-\u003e5432/tcp","Replicas":"0/1"}